Advice Needed for Removing Moss Buildup from Vehicle Tailgate Lights

[PRIDECANKILL]

The rear tailgate lights on either side of my vehicle have collected moss and some green residue. I tried cleaning them at home using detailing brushes and an Autoglym product, but unfortunately, I wasn’t able to successfully remove the moss-like buildup on the lights.

I would greatly appreciate any advice on effective products that won't cause any damage to the paint but will get the job done. This has become an eyesore at the moment.

Thanks!